(function connectSSE(){
  let es;
  function open() {
    es = new EventSource("/events");
    es.onopen = () => window.setConnected(true);

    es.addEventListener("state", (ev) => {
      try { window.applyFaceState(JSON.parse(ev.data)); } catch (_) {}
    });

    es.onerror = () => {
      window.setConnected(false);
      try { es.close(); } catch (_) {}
      setTimeout(open, 1200);
    };
  }
  open();
})();